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Texas Instruments SN74AHCT1G08DBVT
- Part No.:
- SN74AHCT1G08DBVT
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74AHCT1G08DBVT.pdf
- Description:
- IC GATE AND 1CH 2-INP SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,892
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Product details
Overview
SN74AHCT1G08DBVT from Texas Instruments is a single 2-input positive-AND gate IC operating at 4.5–5.5 V, delivering 7.1 ns max propagation delay at 5 V, ±8 mA output drive, TTL-compatible inputs, and 10 µA max supply current. It performs Y = A × B logic in power-sensitive applications such as LED status indication and power sequencing.
For engineers reviewing the SN74AHCT1G08DBVT datasheet, SN74AHCT1G08DBVT pinout, SN74AHCT1G08DBVT application, or SN74AHCT1G08DBVT equivalent, key selection criteria include its SOT-23-5 package, 5-pin logic gate topology, 125°C max operating temperature, and compatibility with 3.3 V–5 V mixed-voltage system interfacing.
Technical Context
The SN74AHCT1G08DBVT implements standard positive-logic AND functionality (Y = A • B) using CMOS technology with TTL-voltage compatible inputs-accepting VIH ≥ 2 V and VIL ≤ 0.8 V across –40°C to 125°C. Its robust input structure supports up-translation from 3.3 V logic domains to 5 V systems without level shifters.
Designed for low-power operation, it features 1 µA typical ICC at 25°C and 10 µA max over full temperature range, enabling use in battery-backed or always-on subsystems. Output drive capability of ±8 mA at 5 V ensures reliable signal integrity into light capacitive loads (e.g., 15 pF), with controlled edge rates minimizing ringing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Enables direct integration into standard 5 V rail systems with ±10% tolerance margin. |
| Propagation Delay | 7.1 ns max at 5 V, CL = 15 pF - Supports timing-critical control paths in industrial I/O and status monitoring. |
| Output Drive | ±8 mA at 5 V - Sufficient to directly drive LEDs, small logic loads, or enable/disable signals without external buffers. |
| Input Compatibility | TTL-voltage compatible - Accepts 3.3 V logic high (VIH ≥ 2 V) while powered from 5 V, simplifying mixed-voltage interface design. |
| Supply Current | 10 µA max over –40°C to 125°C - Ensures stable quiescent power in always-on monitoring circuits and battery-operated devices. |
| Operating Temperature | –40°C to 125°C - Qualified for industrial and automotive under-hood environments where thermal stress is present. |
| ESD Rating | ±2500 V HBM - Provides robust handling during board assembly and field service without additional protection circuitry. |
Pinout & Package
SOT-23-5 (DBV) package: 2.9 mm × 2.8 mm footprint, 1.45 mm max height, 5-pin surface-mount outline with gull-wing leads and exposed metal pad for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Input A | Primary logic input accepting TTL-level signals; must be tied to VCC or GND if unused to prevent floating states. |
| 2 (B) | Input B | Secondary logic input; functionally identical to Pin 1; both inputs required HIGH to assert output HIGH. |
| 3 (GND) | Ground | Reference return path for all internal circuitry; requires low-inductance connection to PCB ground plane. |
| 4 (Y) | Output | Active-high AND result; drives loads up to ±8 mA; output voltage swing limited to 0–VCC range. |
| 5 (VCC) | Supply | 5 V power rail input; requires local 0.1 µF bypass capacitor placed adjacent to pin for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Low ICC consumption | 10 µA max supply current enables use in energy-constrained applications like portable diagnostics and sensor nodes. |
| TTL-compatible inputs | Accepts 3.3 V logic high (≥2 V) while powered at 5 V-eliminates need for discrete level translators in mixed-voltage designs. |
| Robust ESD performance | ±2500 V HBM rating reduces risk of damage during handling and automated assembly, lowering test yield loss. |
| Controlled edge rates | Minimizes output ringing on unterminated traces, improving signal integrity in compact PCB layouts with short routing. |
| Latch-up immunity | Exceeds 250 mA per JESD17 - prevents destructive latch-up events under transient overvoltage or ESD stress conditions. |
Applications
| LED Status Indication | Power Sequencing Control |
|---|---|
Use Scenario: Driving an indicator LED that illuminates only when two system readiness signals (e.g., MCU boot complete and sensor calibration OK) are simultaneously asserted. IC Role / Device Role / Timing Role: Single 2-input AND gate performing real-time logical conjunction of independent status lines. Use Value: Eliminates need for microcontroller GPIO polling or software logic, reducing firmware complexity and response latency. | Use Scenario: Enabling a downstream 5 V subsystem only after both primary 5 V and auxiliary 3.3 V rails have stabilized within specification. IC Role / Device Role / Timing Role: Hardware-enforced AND gate ensuring strict power-up order compliance before enabling critical peripherals. Use Value: Prevents brown-out faults and latch-up in downstream ICs by enforcing deterministic, zero-software-dependency sequencing. |
| Industrial I/O Signal Conditioning | Factory Automation Safety Interlock |
Use Scenario: Combining two independent fault detection signals (e.g., overtemperature and overcurrent) to generate a unified shutdown command for motor drivers. IC Role / Device Role / Timing Role: Fast-response logic gate providing sub-10 ns decision latency for hardware-level safety responses. Use Value: Meets SIL-2 timing requirements for hardware interlocks without relying on slower software-based monitoring loops. | Use Scenario: Validating that both emergency stop button and guard door switch are closed before allowing machine motion. IC Role / Device Role / Timing Role: Fail-safe AND gate requiring dual redundant inputs to assert enable signal-prevents single-point failure activation. Use Value: Complies with ISO 13850 mechanical safety standards by implementing hardware-based dual-channel validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G08DBVR | Lower VCC range (1.65–5.5 V); 3.7 ns typ tPD at 3.3 V; 24 mA drive; CMOS-only inputs (not TTL-compatible). | Better suited for 3.3 V–core systems; unsuitable where legacy 5 V TTL signaling must be accepted. | Select when operating below 4.5 V or requiring higher speed at 3.3 V; avoid if interfacing with older 5 V TTL outputs. |
| MC74VHC1G08DTT1G | Wider VCC range (2–5.5 V); 7.5 ns max tPD at 5 V; ±8 mA drive; TTL-compatible inputs; different SOT-23-5 marking and MSL rating. | Valid alternative for space-constrained industrial controls; same functional behavior but distinct qualification and traceability. | Use when TI sourcing is constrained; verify MSL handling and reflow profile compatibility with existing assembly process. |
Compared with SN74AHCT1G08DBVT, SN74LVC1G08DBVR offers superior speed and lower voltage flexibility but lacks TTL input compatibility, while MC74VHC1G08DTT1G provides identical logic behavior and voltage tolerance with alternate manufacturing lineage-making it a drop-in functional substitute where TI part availability is limited.
Availability
SN74AHCT1G08DBVT is available at Aetrix Electronics and suitable for industrial automation, factory safety interlocks, and embedded status indication requiring stable component supply across extended product lifecycles.
Supply support for SN74AHCT1G08DBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of experience in high-reliability industrial and automotive-grade components.
The SN74AHCT1G08DBVT belongs to TI's AHCT logic family-designed specifically for 5 V systems requiring TTL-compatible inputs, low static power, and robust operation across extended temperature ranges.
FAQ
What is the maximum operating temperature for the SN74AHCT1G08DBVT?
The SN74AHCT1G08DBVT is rated for continuous operation from –40°C to +125°C ambient temperature. This specification is validated per JEDEC JESD78 and confirmed in Section 5.3 of the official datasheet. The device maintains full electrical performance-including propagation delay, output drive, and input thresholds-across this full industrial temperature range. Thermal derating is not required up to 125°C when used within recommended operating conditions.
Does the SN74AHCT1G08DBVT support 3.3 V input signals while powered at 5 V?
Yes, the SN74AHCT1G08DBVT accepts 3.3 V logic-high inputs while operating at 5 V VCC. Its TTL-compatible inputs require only VIH ≥ 2.0 V (min) and VIL ≤ 0.8 V (max), which fully accommodates 3.3 V CMOS/TTL logic levels. This allows seamless interfacing between 3.3 V controllers and 5 V peripheral subsystems without external level-shifting circuitry-confirmed in Section 7.3 and Table 5-3 of the datasheet.
What is the recommended bypass capacitor for the SN74AHCT1G08DBVT?
Texas Instruments recommends a 0.1 µF ceramic bypass capacitor placed as close as possible to the VCC pin (Pin 5) of the SN74AHCT1G08DBVT. This value is specified in Section 8.3 of the datasheet to suppress high-frequency noise and stabilize the supply during output switching transients. For improved broadband decoupling, pairing with a 1 µF capacitor in parallel is acceptable-but the 0.1 µF unit must be physically nearest to the pin to minimize inductance.
Can unused inputs on the SN74AHCT1G08DBVT be left floating?
No, unused inputs on the SN74AHCT1G08DBVT must never be left floating. Section 8.4.1 and TI application report SCBA004 explicitly state that all unused inputs must be tied to either VCC or GND to prevent undefined logic states, increased ICC, and potential oscillation. For this single-gate device, if only one input is used, the other must be hard-wired to VCC (to make the AND function dependent solely on the active input) or GND (to force output LOW).
Is the SN74AHCT1G08DBVT pin-compatible with other SOT-23-5 logic gates?
The SN74AHCT1G08DBVT uses the standard SOT-23-5 pinout (Pin 1 = A, Pin 2 = B, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC), matching TI's SN74AHCT1Gxx series and most industry-standard 5-pin logic gates in DBV packages. However, pin compatibility does not guarantee functional or electrical equivalence-always verify logic function, voltage ratings, and drive strength against the target replacement part's datasheet before substitution.
SN74AHCT1G08DBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHCT
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- AND Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
SN74AHCT1G08DBVT FAQ
1.How can I place an order for SN74AHCT1G08DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHCT1G08DBVT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74AHCT1G08DBVT reliable?
The price and inventory of SN74AHCT1G08DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHCT1G08DBVT is usually 5 days.
3.What payment methods are accepted for SN74AHCT1G08DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AHCT1G08DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AHCT1G08DBVT?
SN74AHCT1G08DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHCT1G08DBVT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74AHCT1G08DBVT?
For technical support, including SN74AHCT1G08DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHCT1G08DBVT requirements.
6.How does Aetrix verify that SN74AHCT1G08DBVT is sourced from the original manufacturer or authorized distributors?
All SN74AHCT1G08DBVT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74AHCT1G08DBVT meets industry standards.
7.What is the process for return or replacement of SN74AHCT1G08DBVT?
All SN74AHCT1G08DBVT units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHCT1G08DBVT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74AHCT1G08DBVT part is unused and in its original packaging.
Return procedure for SN74AHCT1G08DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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